NVidia researchers are working on the very thin augmented reality glasses

Towards thinner virtual reality glasses?

A team of researchers from NVIDIA Research and Stanford University has released a new paper showcasing a pair of ultra-thin virtual reality glasses. The screens can display true dynamic 3D content, solving the problem of vergence and accommodation. Although the research prototypes demonstrating the principles are much smaller in terms of field of view, the researchers say it would be easy to achieve a 120° diagonal field of view.

Scientific work for less bulky glasses

Released ahead of this year’s SIGGRAPH 2022 conference, a team of researchers from NVIDIA Research and Stanford demonstrated a near-eye virtual reality display that can be used to display flat images or holograms in a compact form factor. . The scientific paper also explores interconnected system variables that impact key viewing factors such as field of view, viewing angle, and eye relief. The researchers explored different algorithms to optimize the rendering of the image to obtain the best visual quality.

Playing with optical constraints

The size of virtual reality headsets on the market has increased little over the years, mainly due to an optical constraint. Most virtual reality headsets use a single screen and a single lens. In order to concentrate the light from the screen into our eye, the lens must be at a certain distance from the screen; closer, the image will be blurred. Eliminating this space between the lens and the screen would unlock shapes that were previously impossible for virtual reality headsets. In NVIDIA-Stanford’s recently released paper, “Holographic Glasses for Virtual Reality,” the team shows that they built a holographic display using a spatial light modulator combined with a waveguide rather than a traditional lens. . On the other hand, the Nvidia-Stanford researchers write that their holographic glasses system is actually a holographic display (through the use of a spatial light modulator), which they tout as a unique advantage of their approach. However, the team also writes that it’s possible to display typical flat images on the screen (which, like current VR headsets, can converge for stereoscopic viewing). The article is attributed to researchers Jonghyun Kim, Manu Gopakumar, Suyeon Choi, Yifan Peng, Ward Lopes and Gordon Wetzstein.

To the scientific article >Holographic Glasses for Virtual Reality (d1qx31qr3h6wln.cloudfront.net)

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NVidia researchers are working on the very thin augmented reality glasses

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